- Compiler diagnostics updated: several former warnings are now errors or removed, and many analysis bugs are fixed (e.g., open/override, invisible setter, sealed class exhaustiveness).
- New compiler options added for language version, JVM target, and JDK home, plus performance boost by reducing I/O when loading compiled classes.
- IDE enhancements: smarter code completion, new inspections/quick‑fixes, Spring support features, and standard‑library loop optimizations.